#include <bits/stdc++.h>
using namespace std;
template <typename T> void read(T &x){
    x = 0; int f = 1; char c = getchar();
    for (; !isdigit(c); c = getchar()) if (c == '-') f = -1;
    for (; isdigit(c); c = getchar()) x =  (x << 3) + (x << 1) + (c ^ 48);
    x *= f;
}
#define ll long long
// open the freopen
int n;

int main(){
    freopen("arena.in", "r", stdin);
    freopen("arena.out", "w", stdout);
    read(n);

    return 0;
}
